40 horse evinrude 1989 with VRO

[jeff in beckley]

when i am running down the lake wide open, it will just start slowly slowing down then get to a point where it just dies. then it will not run but at about half throttle even though it is wide open.<br /><br />i took the carbs off and cleaned them today so i know it isnt that.checked fuel filter.<br /><br />could it be coil pack or the 2 things under the flywheel?

 

[scubaman67]

Re: 40 horse evinrude 1989 with VRO

fuel delivery? what's your primer bulb look like when the engine slows down. proper venting on the tank? same thing happened to my 70 horse..had gunk pluggin up the fuel pickup in the tank.

 

[jeff in beckley]

Re: 40 horse evinrude 1989 with VRO

i have tried to squeeze the bulb while it is doing this and it doesnt help.

 

[rickdb1boat]

Re: 40 horse evinrude 1989 with VRO

Have you tried hitting the primer(Choke)when it does this? Sounds like it's starving for fuel and may be a fuel pump problem.

 

[jeff in beckley]

Re: 40 horse evinrude 1989 with VRO

yea i have did that as well.<br /><br />let me ask you this....could a coil be going out on this and it just be running on one cyliner then dying? is this the motor with one coil or 2?

 

[tiller7104]

Re: 40 horse evinrude 1989 with VRO

If you shut the outboard off, and restart it does it run good or does it take time to recover?

 

[blueclaw47]

Re: 40 horse evinrude 1989 with VRO

I have the same motor and had the same problem. the jets in the carbs were sticking..I purchased some OEM engine tuner sprayed it in the carb let it set for a day no more problems now I take the cover off and spray some in the screens after each use and have never had a problem since (knock on wood three times)

 

[tashasdaddy]

Re: 40 horse evinrude 1989 with VRO

did you do all of this? http://forums.iboats.com/showthread.php?t=244013

did you check spark when the motor started acting up. that is the only way to determine, if a coil is failing, or a power pack. if a coil is not providing spark. return to the dock, and completely swap the 2 coils, if the problem follows the coil, replace the coil. if the problem stays the the cylinder, you 99% have a power pack problem. have you check compression on both cylinders.